/*
 * TeleStax, Open Source Cloud Communications  Copyright 2012.
 * and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.mobicents.protocols.ss7.cap.EsiGprs;

import java.io.IOException;

import org.mobicents.protocols.asn.AsnException;
import org.mobicents.protocols.asn.AsnInputStream;
import org.mobicents.protocols.asn.AsnOutputStream;
import org.mobicents.protocols.asn.Tag;
import org.mobicents.protocols.ss7.cap.api.CAPException;
import org.mobicents.protocols.ss7.cap.api.CAPParsingComponentException;
import org.mobicents.protocols.ss7.cap.api.CAPParsingComponentExceptionReason;
import org.mobicents.protocols.ss7.cap.api.EsiGprs.DisconnectSpecificInformation;
import org.mobicents.protocols.ss7.cap.api.service.gprs.primitive.InitiatingEntity;
import org.mobicents.protocols.ss7.cap.primitives.SequenceBase;
import org.mobicents.protocols.ss7.map.api.MAPParsingComponentException;

/**
 * 
 * @author Lasith Waruna Perera
 * 
 */
public class DisconnectSpecificInformationImpl  extends SequenceBase  implements DisconnectSpecificInformation{

	public static final int _ID_initiatingEntity = 0;
	public static final int _ID_routeingAreaUpdate = 1;
	
	public static final int _ID_DisconnectSpecificInformation = 3;
	
	private InitiatingEntity initiatingEntity;
	private boolean routeingAreaUpdate;
	
	public DisconnectSpecificInformationImpl() {
		super("DisconnectSpecificInformation");
	}

	public DisconnectSpecificInformationImpl(
			InitiatingEntity initiatingEntity, boolean routeingAreaUpdate) {
		super("DisconnectSpecificInformation");
		this.initiatingEntity = initiatingEntity;
		this.routeingAreaUpdate = routeingAreaUpdate;
	}

	@Override
	public InitiatingEntity getInitiatingEntity() {
		return this.initiatingEntity;
	}

	@Override
	public boolean getRouteingAreaUpdate() {
		return this.routeingAreaUpdate;
	}
	
	public int getTag() throws CAPException {
		return Tag.SEQUENCE;
	}

	public int getTagClass() {
		return Tag.CLASS_CONTEXT_SPECIFIC;
	}

	@Override
	protected void _decode(AsnInputStream asnIS, int length)
			throws CAPParsingComponentException, IOException, AsnException,
			MAPParsingComponentException {
		this.initiatingEntity = null;
		this.routeingAreaUpdate = false;

		AsnInputStream ais = asnIS.readSequenceStreamData(length);
		while (true) {
			if (ais.available() == 0)
				break;

			int tag = ais.readTag();

			if (ais.getTagClass() == Tag.CLASS_CONTEXT_SPECIFIC) {
				switch (tag) {
				
				case _ID_initiatingEntity:
					if (!ais.isTagPrimitive())
						throw new CAPParsingComponentException("Error while decoding " + _PrimitiveName + ".initiatingEntity: Parameter is not  primitive",
								CAPParsingComponentExceptionReason.MistypedParameter);
					int i1 = (int) ais.readInteger();;
					this.initiatingEntity = InitiatingEntity.getInstance(i1);
					break;
				case _ID_routeingAreaUpdate:
					if (!ais.isTagPrimitive())
						throw new CAPParsingComponentException("Error while decoding " + _PrimitiveName + ".routeingAreaUpdate: Parameter is not  primitive",
								CAPParsingComponentExceptionReason.MistypedParameter);
					this.routeingAreaUpdate = true;
					ais.readNull();
					break;
				default:
					ais.advanceElement();
					break;
				}
			} else {
				ais.advanceElement();
			}
		}
	}
	
	@Override
	public void encodeData(AsnOutputStream asnOs) throws CAPException {
		
		try {
			if (this.initiatingEntity != null)
				asnOs.writeInteger(Tag.CLASS_CONTEXT_SPECIFIC, _ID_initiatingEntity, this.initiatingEntity.getCode());
				
			if (routeingAreaUpdate)
				asnOs.writeNull(Tag.CLASS_CONTEXT_SPECIFIC, _ID_routeingAreaUpdate);

		}catch (IOException e) {
			throw new CAPException("IOException when encoding " + _PrimitiveName + ": " + e.getMessage(), e);
		} catch (AsnException e) {
			throw new CAPException("AsnException when encoding " + _PrimitiveName + ": " + e.getMessage(), e);
		}
	}
	
	@Override
	public String toString() {
		StringBuilder sb = new StringBuilder();
		sb.append(_PrimitiveName + " [");

		if (this.initiatingEntity != null) {
			sb.append("initiatingEntity=");
			sb.append(this.initiatingEntity.toString());
			sb.append(", ");
		}
		
		if (this.routeingAreaUpdate) {
			sb.append("routeingAreaUpdate ");
			sb.append(" ");
		}
	
		sb.append("]");

		return sb.toString();
	}

}
